MRI 1: T1-weighted transversal: Towards the marrow, there is an isointense mass (intermediate signal intensity) in the area of the corpus callosum, growing from the medial area in both lateral ventricles. The image shows a second, smaller (slightly hypointense) mass lateral to the right.

MRI 2: T1-weighted image after gadolinium application. Transversal. Some contrast uptake in the area of the corpus callosum, growing from the medial area in both lateral ventricles.

Contrast uptake of the same intensity in the smaller mass which is located laterally to the right.

After contrast application, a further (third) intraparencymal-lying mass occipitally, which before contrast application was not seen.

MRI 3: T1-weighted image after gadolinium, coronal. Contrast uptake in the area of the corpus callosum, growing from the medial area in both lateral ventricles.

The image shows a second, smaller (slightly hypointense) mass lateral to the right.